Martin Wittmann, his wife Maria Barbara, and children (Martin, age 6; Julianna, age 4) immigrated to Denmark (Schleswig-Holstein) arriving in the city of Schleswig on 9 May 1761.
Martin died, and his widow remarried to Günther Thomsen. The combined Thomsen / Wittmann family left the Danish colonies in May 1764 and joined the migration to Russia.
They settled in the Volga German colony of Grimm and are recorded there on the 1775 census in Household No. 53.
The Eichhorns record that Martin Wittman came from the German village of "Spöck, Margrafschaft Baden-Durlach."
- 1775 Census of Grimm (No. 163).
- Eichhorn, Alexander, Jacob & Mary Eichhorn. The Immigration of German Colonists to Denmark and Their Subsequent Emigration to Russia in the Years 1759-1766 (Deiningen, Germany: Drukerei und Verlag Steinmeier GmbH & Co. Kg, 2012): B-1806.
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga: Economy, Population, and Agriculture (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Gm008.